Edgy
Posted by derrick on May 20, 2008
John Martin aka Anne Elk demonstrates how a kayak is thick in the middle and thin on both ends
Rules are great things when they work. However there are times when rules are used as ways to cover up for distraction or lack of experience. In sea kayaking there are some rules that linger out there for no other reason than there are some folks who just don’t paddle very often but read a lot and love to debate what they’ve read. Certainly if they would just go out and spend more time on the water many of these rules they debate would become clear. Theory is a great place to start but it is certainly no substitute for experience. Just ask William Blake.
One of technique that seems to get plenty of debate is “edging”. The general idea is that by leaning or edging your kayak, more of the hull will come out of the water making it easier to turn. Why? Well again simply put, sea kayaks are fat in the middle and thin on the ends (as in the Brontosaurus theory on Monty Python). When the boat leans over more of those thin bits come out of the water. Where the debate comes in when you talk about which way to lean the boat.
I should jump in here and talk for a moment about the two ways we accomplish the task of leaning the kayak. One way is obvious. We lean over. In sea kayaking “leaning” means we bring our whole body over. Visualize your whole body being inflexible. As you tip to one side or the other your kayak will tip with you, or leans. The other way we lean the boat is called “edging”. When we edge the boat we are flexible at the hip. This way our upper body stays vertical to the water and only our lower body (the bit inside the boat) leans. In either case the boat itself leans over, the difference is in what our upper body is doing.
One of the most frustrating parts of my initial coach training was learning to demonstrate sweeps or to put it simply, to turn the kayak. The idea behind the demonstration being that you use your paddle to turn the kayak clockwise or counter clockwise in a complete circle while avoiding moving forward or backward. It’s not all that complicated really. IF you do it right. Where things get interesting is when you begin to add that second element. . . the lean. . . or edge if you like! The first trick is to remember that leaning and edging are often counter intuitive. In most instances you edge or lean out of a turn in a sea kayak. Just the opposite of what you would do on a bicycle. Make sense? However that “rule” comes with provisos. Which takes me back to that silly sweep demonstration.
When I was learning to demonstrate turning a kayak on a dime I would continually lean out of the turn. My model would always start out just fine but then I would find myself getting shaky and out of balance. Then of course I’d get told I needed to clean it up and feel like a hopeless git for the rest of the day. No matter what I did from then on I always ran into the same problem. I’d start out well, then get out of balance. On and on it went. It was not until I was giving this sad exhibition to a coach in the middle of the triangle off the coast of Tybee Island, Georgia, that I was finally asked, “What the hell are you doing???”! Good question! What the hell was I doing??
The problem was seeing the big picture while being blind to its separate parts. Conceptually it made sense. Spin your kayak to the left by leaning right. Simple. Yet in practice it never worked. When I started out using a forward sweep all would be fine. I’m leaning right and the bow goes left, however the second half was where it all fell apart. I would turn my body to the opposite side, reach back and continue the turn with a reverse sweep. What was missed when I was taught the reverse sweep bit was that this was a mirror image of the forward sweep, a separate move in an opposite direction. Thus, I had to lean the other way! Call this a memory point, “reverse sweep; reverse everything”. While these two moves; the forward sweep and reverse sweep are together turning the boat in one direction, individually each move is a mirror opposite of the other. The lean changes as well.
It’s hard to tell what was going on when I was first learning to demonstrate sweeps. Most likely the coach was distracted and just missed the lean. Still in recognizing my balance problems it should have hinted to something more in the technique going wrong. You can imagine that these days a good wobble sets off alarm bells when I’m watching someone as they learn their sweeps. It’s not always the lean but it’s worth checking. That’s the thing with rules. In those moments when we are distracted or out of focus our mouths can start quoting rules without even thinking about it. They tend to get hardwired. We have to keep in mind that often a rule is really a guide line and that each situation or student is different. A rule applied in the wrong situation can sometimes do more harm than good.




Thanks for the post…and the pic of John Martin. His advanced open water rescue scenario class is still one of the best classes I’ve every been in.
I recently took an ACA instructor workshop and learned to edge into the reverse sweep too. The IT explained what’s going on with the boat very well. When the boat is edged, not only is the kayak’s waterline shortened, but the stern is also locked in one direction, and can slip in the other direction. Think of spreading peanut butter on bread. The knife is tilted and can slip over the peanut butter and spread it in one direction, but gets caught up (and cuts the bread) if you try and spread backwords. So, on the forward sweep you edge away from the direction the bow is turning so that the stern can slip while the bow is locked. On the reverse sweep, the role of bow and stern are reversed. So, as you sweep from stern to bow, the stern is locked and the bow is allowed to slip (or spread the peanut butter).
After learning about this, I went home and modeled this with a table knife, and it made a lot of sense. I started thinking about how to use the locking and unlocking of the stern to counter wind conditions too. When the kayak is in forward motion, the bow is locked by the waves it produces, so adjusting the amount of slip in the stern by edging helps with boat control.
In the picture above,during a sweep the stern would dig into the sand to the kayak’s left, while the bow would be allowed to slip over the water to the boats right. If the kayak was moving forward through the water, the bow would be locked by it’s own waves and the stern would be allowed to slip to the boat’s right.
Hey Kam,
Thanks for the comments. Unless I’m misunderstanding, the idea of locking the bow or stern comes from shifting your weight forward or back in the cockpit, usually it’s enough to lean forward or back. This is certainly helpful in various weather conditions. (turning up or down wind etc) However in flat water sweep I’m not sure the concept of locking comes into play, at least in a positive way.
Think about it this way. Most people tend to lean slightly forward when the do a forward sweep. This would tend to “lock” the bow which is counter productive. They also tend to lean back when doing a reverse sweep. Again this would tend to lock the stern when they need it to move. So we would always encourage students to sit up straight of course. If you are sitting up straight and edge the kayak both ends of the boat should come out of the water fairly evenly. Of course that depends on the design of the kayak as well. I can tell you that if I put any of my kayaks on edge, a good foot or more of boat are no longer in the water.
Hello derrick,
Weighting a sea kayak fore and aft with a body lean has almost no effect whatsoever, whether stationery or on the move.
‘Unlocking’ the stern is a feature of the hull shape of boats, stationery or moving. Try paddling backwards and reverse edging, you will find that ‘unlocking the bow’ has a marked lesser effect than paddling forwards and reverse edging to ‘unlock the stern’ — this is a feature of boat shape.
Outside edging does ‘unlock the stern’ when doing a stationery forward sweep on most sea kayaks. But almost as importantly it allows you to balance off the active blade. Edging the other way on the reverse sweep receives the benefit of a reaction from the paddle stroke for balance (try edging into the turn on both a forward sweep to feel how this effects your balance).
All in all, I would not use forward/reverse sweep combos in my sea kayak. It is far more elegant to skim the blade over the water back into another forward sweep — put on enough edge and you will still turn on a dime without much forward travel (unless you are in a very straight running kayak).
Discussion of this kind is plain kooky in my mind. There is no ‘rule’ as you rightly mention — your boat, style and conditions will all effect which stroke pattern you employ. Stop talking about this, stop trying to conceptualize it and ‘teach it’ — rather just go out and do what works.
Yours, Trumpet
Interesting conversation. I agree with Derrick, and especially Trumpet. But, I don’t think it matters which edge you go to, as long as you lay the boat over. What I ‘feel’ happening when I do a sweep, either direction, is that my lower body is swinging (forcing) the boat around, in the opposite direction of the sweep. Just jam the combing down into the water and do it.
I find I must limit the use of food prep analogies while kayaking, lest hunger pains o’er take me.
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